Localization support for the Website service (#10)

This PR contains the work done to introduce server-side localization support to the **Website** service so the landing and error pages are served in the visitor's negotiated language, backed by a new reusable Localization package. To provide further details about the work: * Created the _Localization_ package — a bundle-bound `Localize` method and a `LanguageList` type. * Language negotiation — `NegotiateLanguage` method picks the best supported language from the request's _Accept-Language_ header (falling back to the default); the `LocalizationMiddleware` middleware resolves it per request and stores it on a new `LocalizedRequestContext` / `WebsiteRequestContext` context. * Localized responses — `LocalizedHTMLCollectionResponse` pre-renders each page once per language and caches the bytes (with `Content-Language` + `Vary: Accept-Language`), reused by the `RootController` controller and `NotFoundMiddleware` middleware. * The `CachedHTMLResponse` response gained custom-header support. * Localized pages — the `IndexPage` and `ErrorPage` pages now resolve their strings via `Localize` method; * Added `Localizable.xcstrings` catalogs. * Wired the `LocalizationMiddleware` middlewaer into the router. Reviewed-on: rock-n-code/loud-amsterdam#10 Co-authored-by: Javier Cicchelli <javier@rock-n-code.com> Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>
2026-06-29 23:08:36 +00:00
parent 847058d642
commit 6c66ea74cc
24 changed files with 858 additions and 49 deletions
@@ -0,0 +1,61 @@
+{
+  "sourceLanguage" : "en",
+  "strings" : {
+    "error.heading" : {
+      "comment" : "The not-found page's main heading.",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Page Not Found"
+          }
+        }
+      }
+    },
+    "error.message" : {
+      "comment" : "The not-found page's body text.",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Sorry, but the page you were trying to view does not exist."
+          }
+        }
+      }
+    },
+    "error.title" : {
+      "comment" : "The not-found page's document title.",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Page Not Found"
+          }
+        }
+      }
+    },
+    "index.greeting" : {
+      "comment" : "The landing page's greeting paragraph.",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Hello world! This is HTML5 Boilerplate."
+          }
+        }
+      }
+    },
+    "index.title" : {
+      "comment" : "The landing page's document title.",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Index page"
+          }
+        }
+      }
+    }
+  },
+  "version" : "1.0"
+}